Physically strong and healthy (4-6)
I believe the answer is:
able-bodied
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">physically strong and healthy</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for able-bodied that I've seen before include "Physically strong and healthy" , "Not physically unfit" .)